rate = int(input())

if rate >= 400 and 600 > rate:
    print(8)
elif rate >= 600 and 800 > rate:
    print(7)
elif rate >= 800 and 1000 > rate:
    print(6)
elif rate >= 1000 and 1200 > rate:
    print(5)
elif rate >= 1200 and 1400 > rate:
    print(4)
elif rate >= 1400 and 1600 > rate:
    print(3)
elif rate >= 1600 and 1800 > rate:
    print(2)
elif rate >= 1800 and 2000 > rate:
    print(1) rate = int(input()) rate int(input()) int input() input if rate >= 400 and 600 > rate:
    print(8)
elif rate >= 600 and 800 > rate:
    print(7)
elif rate >= 800 and 1000 > rate:
    print(6)
elif rate >= 1000 and 1200 > rate:
    print(5)
elif rate >= 1200 and 1400 > rate:
    print(4)
elif rate >= 1400 and 1600 > rate:
    print(3)
elif rate >= 1600 and 1800 > rate:
    print(2)
elif rate >= 1800 and 2000 > rate:
    print(1) rate >= 400 and 600 > rate rate >= 400 rate 400 600 > rate 600 rate print(8) print 8 elif rate >= 600 and 800 > rate:
    print(7) rate >= 600 and 800 > rate rate >= 600 rate 600 800 > rate 800 rate print(7) print 7 elif rate >= 800 and 1000 > rate:
    print(6) rate >= 800 and 1000 > rate rate >= 800 rate 800 1000 > rate 1000 rate print(6) print 6 elif rate >= 1000 and 1200 > rate:
    print(5) rate >= 1000 and 1200 > rate rate >= 1000 rate 1000 1200 > rate 1200 rate print(5) print 5 elif rate >= 1200 and 1400 > rate:
    print(4) rate >= 1200 and 1400 > rate rate >= 1200 rate 1200 1400 > rate 1400 rate print(4) print 4 elif rate >= 1400 and 1600 > rate:
    print(3) rate >= 1400 and 1600 > rate rate >= 1400 rate 1400 1600 > rate 1600 rate print(3) print 3 elif rate >= 1600 and 1800 > rate:
    print(2) rate >= 1600 and 1800 > rate rate >= 1600 rate 1600 1800 > rate 1800 rate print(2) print 2 elif rate >= 1800 and 2000 > rate:
    print(1) rate >= 1800 and 2000 > rate rate >= 1800 rate 1800 2000 > rate 2000 rate print(1) print 1 rate = int(input()) int(input()) rate
rate = int(input())

if rate >= 400 and 600 > rate:
    print(8)
elif rate >= 600 and 800 > rate:
    print(7)
elif rate >= 800 and 1000 > rate:
    print(6)
elif rate >= 1000 and 1200 > rate:
    print(5)
elif rate >= 1200 and 1400 > rate:
    print(4)
elif rate >= 1400 and 1600 > rate:
    print(3)
elif rate >= 1600 and 1800 > rate:
    print(2)
elif rate >= 1800 and 2000 > rate:
    print(1)